Means for clearing service-pipes or ejecting liquids



II. L. DEZLNDGIIF.

MEANS FUR CLEARING SERVICE PIPES 0R EJECTlNG-LIQUIDS.

APPLICATION FILED IAN.26, 1920.

1,388,854. Patented Aug. 301,119.21.

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PATENT eprice.

RICHARD L. DEZENDORF, OFRICHMOND HILL, NEW YORK.

MEANS -non. CLEARING sRvIcE-P11=Es 0R EJECTING LIdUIDs.

Specification of Letters Patent. Patented Allg'. 30, 1921.

Applicatiqn med-January 26, 1920. Serial No. 354,301.

Y ZO all (wlw/m, t may concer/n:

Be itknown that I, RICHARD L. DEzEN- DORF, a citizen of the UnitedStates, residing at Richmond Hill, county of Queens,-State of New York,have invented a certain new and useful Improvement in Means for ClearingService-Pipes or Ejecting Liquids, of which the following is a full,clear, and exact description.

My invention relates to means for clearing service pipes or for ejectingliquid and has forits object to provide a simple and eilective means forej ecting from a container gas orliquid at a high pressure by theignition of an lexplosive charge. It further has for its object toprovide a combustion cham- 'ber` for the consumption ofthe ignitedcharge and a simple breech mechanismremovable for inserting the charge.

The following is -a description of an embodiment of my invention,reference being 4had to the accompanying drawings, in

Iparatus;

Fig. v5 shows an improved nozzle and chisel forming part of my inventionand within a vservice pipe;

Fig. .6 is a detail of an ordinary vnozzle which may be used in myapparatus, and Fig. 7 is a detail of a check valve used in embodying myinvention in its preferred form.

Referring more particularly to the drawings, l, 2 are two pipe sectionsconnected together by couplings 3 and 4 sov as to form a U-shapedchamber for containing liquid. 5 is a discharge pipe leading therefromhaving thereon a union coupling 6 so as to permit the chamber formed bythe parts 1 to 4 and the pressure-producing devices carried 4 ltherebyto be angularly adjusted relatively to the part 5, as may benecessary when the device is usedin cramped places. 7 is a fill-v ing anexpansion chamber, and suitable coupllngs 1s a combustion chamber l1held Within a housing 12 which is closed by a plug 13. This combustionchamber has on 1ts outer end a cap 14 which can be removed forkcleansing purposes upon the removal of the plug 13. Connected to thelower end of the explosion-chamber is a coupling 15 to which is secureda housing 16 on the lower end o f which is screwed a breech block 17carrying a ring pin 18 normally pressed outwardby a spring 19, itsoutward movement being limited by a flange 20. 21 is al firing hammerpivotedl at 22 and actuated by a sprmg 23 so that by pulling backwardthe hammer and releasing it a blow is delivered to the firing pin. Inadvance of the firing pin is a cartridge holding chamber 24 screwed intothe coupling 15 and adapted to receive a cartridge 25 which is adaptedto be discharged by the action of hammer 21 upon the firing pin 18; Thecartridge contains at its rear end a firing charge powder and in itsfront end a roll of nitro-cellulose which, from its charac er, burnscomparatively slowlyqbut sulicie tly rapid to quickly sure, which isrelied upon for ejecting the liquid. The combustion chamber is providedwith orifices 26 somewhat removed from its upper end. When the cartridgeis discharged the nitro-cellulose lodges in the upper end of thecombustion chamber and having been ignited by the powder chargecontinues to burn, the gases being d1scharged through the ports 26 andpassing to the liquid container.. These gases produce a heavy pressureupon the top v`of the liquid in the container formed by the parts 1 to 4and eject that liquid at a rapid rate through the nozzle 5.

When the device is used to clean service pipes it is connected to thehead 27 of a service connection, as shown in Fig. i2, ,a tubularextension v28 being provided which extends for a considerable distanceinto the service pipe 29 until it reaches the obstruction therein. Ifthe obstruction is such that it can not lbe blown forward the nozzleshown in Fig. -5 is used, which is provided with 'a chisel 30, wherebythe obstruction can, if necessary, be broken up to some eX- tent andworked backward until some por-` tion of it is behind the rearwardlydischarginglnozzle 31. This rearwardly discharging produce a largevolume of gas-under'presnozzle is provided' with rearwardly openingorifices 32, which, when the liquid discharged through the pipe 5Adischarges backwardly through the openings 32, tends to carry thedislodged material back toward the head 27 of the service pipe. Withthis arrangement by using one or more discharges of liquid from `theliquid container accumulations in the service pipev can be forced backto the head 27 and removed therefrom.`

When the obstruction is of such a nature that it can be blown forwardinto the main,. an ordinary nozzle such as indicated in Fig.'

restored or increased after the pressure due to the firstfexplosion hasbecome reduced. Inv

this modification is the container having a discharge vpipe 51 leadingto the bottom thereof so that its lower end is below the liquid to bedischarged; 52, `52 are. two cartridge receiving and firing devices suchvas shown in Figs. l and 2; 453 .is a sealing cap and 54 is a checkvalve such as shown at 9 and in Fig. 7. These devices are connected tothe liquid container.- 50 and, if' not providedwith discharging hammerssimilar tof` 21, for actuating their ri-ng pins, the ring pins may beactuated by an ordinary ham mer or mallet of suitable size. This form'is adapted to discharge al larger quantity of 1i uid. v

he apparatus shown in Figs.. l and 2 can` be used without a liquid lforlclearing out somestoppages in service pipes, the pressure. and heat ofthe gas developed being sufficient for that purpose. Where liquid is notusedthe`liquid container is not-necessary'.l

The cartridge chamber 24 extends outi ward so that when the breech 17 isremoved flamin the cartridge shell is accessible and easily removed. l'

When used for clearing service4 pi es the liquid `used the container ispre erablyalcohol, or kerosene or a mixture dependingv on conditions.When! used for ejecting a stream ofA liquid, .known as liquid fire, acohol or otherv suitable inflammable liquid is used.

A As will be evident to those Skilled in the art2 my in vention permitsof various modifications without departing from lthe spirit thereof orthe scope of the appended claims.

What I claim is: l;

'1. In alil apparatus for ejectingv li nids,

the combination of a container, a disc arge pipe leading therefrom, anexplosion cham' firing ber connected Ato the upper portion of saidcontainer, and means for igniting an explosive charge within saidexplosion chamber.

2. In an apparatus for -ejecting liquids, the combination of acontainer, a discharge pipe leading,4 therefrom, an explosion chamber'connectedV to the upper portion of said container,mean`s for ignitingan, explosive charge within said explosion chamber, and a combustionchamber in line with said explosion chamber..

3. In an apparatus for ejecting liquids,v

the combination of a container, a discharge pipe leadingv therefrom, anexplosion chambei connected to the upper portion of said container,means .for igniting an explosive charge within saidexplosion chamber,said explosion chamber being adapted to' hold aA cartridge, a `breechblock removable for the insertion of said cartridge, and afiring pin insaid breech block.

4; In an apparatus for ejecting liquids, the combi-nationof a container,a discharge pipe leading therefrom, an explosion chamber connected tothe upper portion of said container, means for igniting an explosivecharge within said explosion chamber, la filling tube for introducingliquid into said container, anda check valvein said filling tube. g

-5LIn an apparatus for ejecting liquids, the combination of a container,a discharge pipe leading therefrom, a plurality of explopipeleadi'ngtherefrom, an explosion chamber connected to the upperportion of saidcontainer, means for ignitin an explosive charge within said explosioncamber, an extension connected to said discharge pipe and adapted toentera as service pi e, anda rearwardlydischarging nozzle on t e end ofsaid extension. A

` 7 An apparatus 'for clearin service pi es comprising an explosion chamer, means or a charge therein, and means for con-v necting the.explosion chamber to the service pipe .to be cleared, said means-[comprising an exv ansion chamber. Y

8. n apparatus for clearin comprising an explosion chamen'means orfiringa charge therein, means for connecting the lexplosion chamber tothe service pipe to be cleared'comprising a discharge pipe RICHARD L.DEzENDoaF.

service pi s and an extension `from said pipe adapted to i

